--- !Document

_tests: !List/Boolean
  - !Equal/String
    a: !GetProperty/String
      source: !Empty
        _hello: !Value/String "world"
      property_name: _hello
    b: !Value/String "world"

  - !Equal/String
    a: !GetProperty/String
      source: !ListElement/Renderable
        source: !List/Renderable
          - !Empty
            _hello: !Value/String "world"
        n: 0
      property_name: _hello
      proxied: true
    b: !Value/String "world"
